e4ea952fb0
Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20231221031652.119827-41-richard.henderson@linaro.org>
267 lines
7.7 KiB
C
267 lines
7.7 KiB
C
/*
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* QEMU model of the CRF - Clock Reset FPD.
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*
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* Copyright (c) 2022 Xilinx Inc.
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* SPDX-License-Identifier: GPL-2.0-or-later
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* Written by Edgar E. Iglesias <edgar.iglesias@xilinx.com>
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*/
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#include "qemu/osdep.h"
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#include "hw/sysbus.h"
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#include "hw/register.h"
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#include "qemu/bitops.h"
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#include "qemu/log.h"
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#include "migration/vmstate.h"
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#include "hw/irq.h"
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#include "hw/misc/xlnx-zynqmp-crf.h"
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#include "target/arm/arm-powerctl.h"
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#ifndef XLNX_ZYNQMP_CRF_ERR_DEBUG
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#define XLNX_ZYNQMP_CRF_ERR_DEBUG 0
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#endif
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#define CRF_MAX_CPU 4
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static void ir_update_irq(XlnxZynqMPCRF *s)
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{
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bool pending = s->regs[R_IR_STATUS] & ~s->regs[R_IR_MASK];
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qemu_set_irq(s->irq_ir, pending);
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}
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static void ir_status_postw(RegisterInfo *reg, uint64_t val64)
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{
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XlnxZynqMPCRF *s = XLNX_ZYNQMP_CRF(reg->opaque);
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ir_update_irq(s);
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}
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static uint64_t ir_enable_prew(RegisterInfo *reg, uint64_t val64)
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{
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XlnxZynqMPCRF *s = XLNX_ZYNQMP_CRF(reg->opaque);
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uint32_t val = val64;
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s->regs[R_IR_MASK] &= ~val;
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ir_update_irq(s);
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return 0;
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}
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static uint64_t ir_disable_prew(RegisterInfo *reg, uint64_t val64)
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{
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XlnxZynqMPCRF *s = XLNX_ZYNQMP_CRF(reg->opaque);
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uint32_t val = val64;
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s->regs[R_IR_MASK] |= val;
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ir_update_irq(s);
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return 0;
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}
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static uint64_t rst_fpd_apu_prew(RegisterInfo *reg, uint64_t val64)
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{
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XlnxZynqMPCRF *s = XLNX_ZYNQMP_CRF(reg->opaque);
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uint32_t val = val64;
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uint32_t val_old = s->regs[R_RST_FPD_APU];
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unsigned int i;
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for (i = 0; i < CRF_MAX_CPU; i++) {
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uint32_t mask = (1 << (R_RST_FPD_APU_ACPU0_RESET_SHIFT + i));
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if ((val ^ val_old) & mask) {
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if (val & mask) {
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arm_set_cpu_off(i);
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} else {
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arm_set_cpu_on_and_reset(i);
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}
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}
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}
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return val64;
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}
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static const RegisterAccessInfo crf_regs_info[] = {
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{ .name = "ERR_CTRL", .addr = A_ERR_CTRL,
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},{ .name = "IR_STATUS", .addr = A_IR_STATUS,
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.w1c = 0x1,
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.post_write = ir_status_postw,
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},{ .name = "IR_MASK", .addr = A_IR_MASK,
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.reset = 0x1,
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.ro = 0x1,
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},{ .name = "IR_ENABLE", .addr = A_IR_ENABLE,
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.pre_write = ir_enable_prew,
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},{ .name = "IR_DISABLE", .addr = A_IR_DISABLE,
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.pre_write = ir_disable_prew,
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},{ .name = "CRF_WPROT", .addr = A_CRF_WPROT,
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},{ .name = "APLL_CTRL", .addr = A_APLL_CTRL,
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.reset = 0x12c09,
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.rsvd = 0xf88c80f6,
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},{ .name = "APLL_CFG", .addr = A_APLL_CFG,
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.rsvd = 0x1801210,
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},{ .name = "APLL_FRAC_CFG", .addr = A_APLL_FRAC_CFG,
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.rsvd = 0x7e330000,
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},{ .name = "DPLL_CTRL", .addr = A_DPLL_CTRL,
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.reset = 0x2c09,
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.rsvd = 0xf88c80f6,
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},{ .name = "DPLL_CFG", .addr = A_DPLL_CFG,
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.rsvd = 0x1801210,
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},{ .name = "DPLL_FRAC_CFG", .addr = A_DPLL_FRAC_CFG,
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.rsvd = 0x7e330000,
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},{ .name = "VPLL_CTRL", .addr = A_VPLL_CTRL,
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.reset = 0x12809,
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.rsvd = 0xf88c80f6,
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},{ .name = "VPLL_CFG", .addr = A_VPLL_CFG,
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.rsvd = 0x1801210,
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},{ .name = "VPLL_FRAC_CFG", .addr = A_VPLL_FRAC_CFG,
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.rsvd = 0x7e330000,
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},{ .name = "PLL_STATUS", .addr = A_PLL_STATUS,
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.reset = 0x3f,
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.rsvd = 0xc0,
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.ro = 0x3f,
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},{ .name = "APLL_TO_LPD_CTRL", .addr = A_APLL_TO_LPD_CTRL,
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.reset = 0x400,
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.rsvd = 0xc0ff,
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},{ .name = "DPLL_TO_LPD_CTRL", .addr = A_DPLL_TO_LPD_CTRL,
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.reset = 0x400,
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.rsvd = 0xc0ff,
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},{ .name = "VPLL_TO_LPD_CTRL", .addr = A_VPLL_TO_LPD_CTRL,
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.reset = 0x400,
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.rsvd = 0xc0ff,
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},{ .name = "ACPU_CTRL", .addr = A_ACPU_CTRL,
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.reset = 0x3000400,
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.rsvd = 0xfcffc0f8,
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},{ .name = "DBG_TRACE_CTRL", .addr = A_DBG_TRACE_CTRL,
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.reset = 0x2500,
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.rsvd = 0xfeffc0f8,
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},{ .name = "DBG_FPD_CTRL", .addr = A_DBG_FPD_CTRL,
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.reset = 0x1002500,
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.rsvd = 0xfeffc0f8,
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},{ .name = "DP_VIDEO_REF_CTRL", .addr = A_DP_VIDEO_REF_CTRL,
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.reset = 0x1002300,
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.rsvd = 0xfec0c0f8,
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},{ .name = "DP_AUDIO_REF_CTRL", .addr = A_DP_AUDIO_REF_CTRL,
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.reset = 0x1032300,
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.rsvd = 0xfec0c0f8,
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},{ .name = "DP_STC_REF_CTRL", .addr = A_DP_STC_REF_CTRL,
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.reset = 0x1203200,
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.rsvd = 0xfec0c0f8,
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},{ .name = "DDR_CTRL", .addr = A_DDR_CTRL,
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.reset = 0x1000500,
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.rsvd = 0xfeffc0f8,
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},{ .name = "GPU_REF_CTRL", .addr = A_GPU_REF_CTRL,
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.reset = 0x1500,
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.rsvd = 0xf8ffc0f8,
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},{ .name = "SATA_REF_CTRL", .addr = A_SATA_REF_CTRL,
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.reset = 0x1001600,
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.rsvd = 0xfeffc0f8,
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},{ .name = "PCIE_REF_CTRL", .addr = A_PCIE_REF_CTRL,
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.reset = 0x1500,
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.rsvd = 0xfeffc0f8,
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},{ .name = "GDMA_REF_CTRL", .addr = A_GDMA_REF_CTRL,
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.reset = 0x1000500,
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.rsvd = 0xfeffc0f8,
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},{ .name = "DPDMA_REF_CTRL", .addr = A_DPDMA_REF_CTRL,
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.reset = 0x1000500,
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.rsvd = 0xfeffc0f8,
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},{ .name = "TOPSW_MAIN_CTRL", .addr = A_TOPSW_MAIN_CTRL,
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.reset = 0x1000400,
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.rsvd = 0xfeffc0f8,
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},{ .name = "TOPSW_LSBUS_CTRL", .addr = A_TOPSW_LSBUS_CTRL,
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.reset = 0x1000800,
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.rsvd = 0xfeffc0f8,
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},{ .name = "DBG_TSTMP_CTRL", .addr = A_DBG_TSTMP_CTRL,
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.reset = 0xa00,
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.rsvd = 0xffffc0f8,
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},
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{ .name = "RST_FPD_TOP", .addr = A_RST_FPD_TOP,
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.reset = 0xf9ffe,
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.rsvd = 0xf06001,
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},{ .name = "RST_FPD_APU", .addr = A_RST_FPD_APU,
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.reset = 0x3d0f,
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.rsvd = 0xc2f0,
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.pre_write = rst_fpd_apu_prew,
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},{ .name = "RST_DDR_SS", .addr = A_RST_DDR_SS,
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.reset = 0xf,
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.rsvd = 0xf3,
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}
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};
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static void crf_reset_enter(Object *obj, ResetType type)
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{
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XlnxZynqMPCRF *s = XLNX_ZYNQMP_CRF(obj);
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE(s->regs_info); ++i) {
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register_reset(&s->regs_info[i]);
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}
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}
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static void crf_reset_hold(Object *obj)
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{
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XlnxZynqMPCRF *s = XLNX_ZYNQMP_CRF(obj);
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ir_update_irq(s);
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}
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static const MemoryRegionOps crf_ops = {
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.read = register_read_memory,
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.write = register_write_memory,
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.endianness = DEVICE_LITTLE_ENDIAN,
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.valid = {
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.min_access_size = 4,
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.max_access_size = 4,
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},
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};
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static void crf_init(Object *obj)
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{
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XlnxZynqMPCRF *s = XLNX_ZYNQMP_CRF(obj);
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SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
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s->reg_array =
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register_init_block32(DEVICE(obj), crf_regs_info,
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ARRAY_SIZE(crf_regs_info),
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s->regs_info, s->regs,
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&crf_ops,
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XLNX_ZYNQMP_CRF_ERR_DEBUG,
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CRF_R_MAX * 4);
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sysbus_init_mmio(sbd, &s->reg_array->mem);
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sysbus_init_irq(sbd, &s->irq_ir);
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}
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static void crf_finalize(Object *obj)
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{
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XlnxZynqMPCRF *s = XLNX_ZYNQMP_CRF(obj);
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register_finalize_block(s->reg_array);
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}
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static const VMStateDescription vmstate_crf = {
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.name = TYPE_XLNX_ZYNQMP_CRF,
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.version_id = 1,
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.minimum_version_id = 1,
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.fields = (const VMStateField[]) {
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VMSTATE_UINT32_ARRAY(regs, XlnxZynqMPCRF, CRF_R_MAX),
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VMSTATE_END_OF_LIST(),
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}
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};
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static void crf_class_init(ObjectClass *klass, void *data)
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{
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ResettableClass *rc = RESETTABLE_CLASS(klass);
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DeviceClass *dc = DEVICE_CLASS(klass);
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dc->vmsd = &vmstate_crf;
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rc->phases.enter = crf_reset_enter;
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rc->phases.hold = crf_reset_hold;
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}
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static const TypeInfo crf_info = {
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.name = TYPE_XLNX_ZYNQMP_CRF,
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.parent = TYPE_SYS_BUS_DEVICE,
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.instance_size = sizeof(XlnxZynqMPCRF),
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.class_init = crf_class_init,
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.instance_init = crf_init,
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.instance_finalize = crf_finalize,
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};
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static void crf_register_types(void)
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{
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type_register_static(&crf_info);
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}
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type_init(crf_register_types)
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